Gas-turbine.



B. K. A. BAUMANN.

GAS TURBINE.

APPLICATION FILED AUG. 22, 1910.

Patented Apr. 18, '1911 rm u. m m m Tun P M 3m m m v m MWH4/ 1 z W/ w. (I u l (L. 5 m w (4m/. W

E. K. A. BAUMANN.

GAS TURBINE.

APPLIOATION FILED AUG.22,1910- Patented Apr. 18, 1911.

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Wfinassasz v I inventor UNr En STATES Parana OFFICE.

ERNS'1 KARL ALEXANDER .BAUMANN, OF STUTTGART-OBERTERKHEIM, GERMANY,

ASSIGNOR OF ONE-HALF T0 ERNST EMIL FREYTAG, 0F ZWICKAU, SAXONY,

GERMANY.

GAS-TURBINE.

Specification of Letters Patent.

Patented Apr. 18,1911.

Application filed August 22, 1910. Serial No. 578,394.

ANDER BAUMANN, a subject of the German Emperor, residing at 8 Bergstrasse, Stuttgart-Obertiirkheim, Germany, have invented certain new and useful Improvements in and Relating to Gas-Turbines; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable otiiers skilled in the art to which it appertains to make and use the same.

This invention relates to as turbines of the class in which use is ma e of the explosion' taking place under one of the pistons of the explosion chamber for preliminarily compressm" the mixture for the next explosion while the admission into the turbine only takes place after explosion and artial expansion. Various methods have a ready been proposed for carrying out this system of working, such for instance as the construction of a radial turbine with inner admission passages in which the explosion chamber adjoining the admission inlet was formed into a compressor piston or a construction having two pistons forming differential pistons arranged on the same axis controlling a ring of nozzles belonging to a rotor also located on the same axis. Both constructions have this drawback, that the compressor-pistons when fitted to turbines of considerable power, themselves take considerable power, so that comparatively slow working of the compressor and consequently tervals between each flow. In addition to this the valve motions with these constructions must be controlled direct from the moving piston rendering the regulation of the preliminary compression ditlicult.

According to the present invention a large number of compressor pistons are provided mounted around a rotor and the e compression pistons also control the admission nozzles, as illustrated in the accompanying drawings, in which- Figure 1 is a diagrammatical view showing a plurality o1" coiiperating cylinders. containing explosion and COIHPIQS lOH chambers, and valve actuating mechanism therein. emlmdying one form of the inven tion. Fig. 2 is a similar view showing a modified form of valve actuating mechauism. Fig. 3 is a similar view in which a plurality of cooperating twin cylinders are equipped with the valve actuating mechanism shown in Fig. 2.

Similar numerals refer to similar parts throughout the views.

At Fig. 1, 8 indicates the explosion chamhers with a nozzle 9 through which the products of explosion are enabled to pass to the rotor 10 of the turbine. The nozzle 9 is normally closed by means of a valve 11.

Supposing that there is in the explosion chamber 8, mixture previously compressed, which has been admitted in the direction of the arrow 12, from the preceding compression chamber through the flu valve 13 by the rise of pressure; then on t e ignition of the mixture the piston 14 is caused torise against its own weight and the pressure of the spring 15 and thereupon the mixture which has been drawn in through the passages 16 and 17 to the back of the piston 14 by a previousdesccnt is expelled in the direction of the arrow 18 to the next chamber. As soon however as the piston 14 reaches the projection 19 on the valve rod 20 of the nozzle valve 11 the valve is opened and allows the .explodctl mixture in the chamber 8, which has already been partly expanded, to pass through and act upon the turbine rotor 10 at a comparatively low temperature and low velocity.

The arrangement shown at Fig. 2 repre sents an arrangement resembling in principle that illustrated at Fig. '1 except that to avoid passing the valve rod 20 through the piston 14 the valve'rod 20 as well as the nozzle 9 are placed outside the chamber 8 communicating with the nozzle. The opening and closing of the valve 1.1 of the nozzle 9 is effected by means of projections 19 which are actuated at the proper moment by the arm 21 fixed to the piston rod 29. of the piston 14.

In the arrangement shown in Fig. 3, twin cylinders 24 are employed having a common explosion chamber 8 and nozzle S). The compression chambers are connected by a passage 25 and in this way, upon an explosion in the chamber 8, both pistons 14 act in unison to con )ress the mixture drawn through the passages 16 and 17 and torce into the vis yress o change on the other side the valve is actuated by the secured to the plsto'nrocis .2 met with the sec What I cia-im ciesire to secure by Let 313s Patent of the United States of America 1. An. cxpiosiive turchine cot combination, a rotor, plurality of ex pioswc cyiindez's communicating with each othcr and. arranged to successively deliver chavu'g 150 actuate said rotoz", and spring actuate? pisioos arranged to be operated againsi; said spring by explosion oi the ci'ierges to comcherge in the next entijacen'i cylinder.

An explosive turbine comprisii'l in combination, a rotor, a plurality of exp We cylinders arr 'ngcd to successiviy oem'cr expiosive charges to actuaie said rolor, s eri g coiriu'clied pistons in said cylinders dividing same into expiosion and com chm'nbers and arranged io he 21-1:- against said spring 0 i gDiiL-ifiil of: {he c on one side of the piston to com L and means com'iect-ing the compres ion chiin'oer one cyiimicz. with the explosion ohmnhci oi?- the nextadjacent cyi'inder.

explosive turbine comprising in 0. A con'ihnmtioh, a lOiGiQ a piurohiy. of cylinders communicating with and arranged 13o succcssiveiy oeuvcr charges to actuate said rotor, and pistons arranged Within said cylinders miapteci upon an explosion therein to compress a charge in the next etijaccnt cylinder.

4-. A11 explosive turbine comprising in confirmation, a rot-01, plurality of explosive cylinders communi waking with each other and arrzu'lgeii to deliver to said rotor, valves cent-roiling admission of. charges from said e'vi nders a wrzmngci,z;qgo11 an cxpiosicn in one sn bhG xistcn to con'ipress a charge in the next adjacent cyiii'ider.

Ah cxpiosive turbine comprising in GOIYlhiiiaiiOB a zoior, a plui'aiity of explosive cyiindel's comi'minicoiing with. each other mid adapted to deliver said rotor, valves cont-roiiing admission charges from said cylinders to :ictuoteseid rotor, and pistons vii-him said cylimflcrs arrzn'igcd upon an e50 piosiou -ii rein to compress a charge in the iacen; cyiii'idcr', said wives being op- J cohnected said pistons to open cioeo Lixc fom'iei.

' 1011"; whereof. I afiix my siglminre. in. picsence c. witnesses.

FIRES? KARL ALEXMIDER BAUHANN.

Witnesses I LOHMANOV, WERNER FBEY'IAG, Feucnmcu N. Sommmen. 

